2016A&A...586A..64S

Query : 2016A&A...586A..64S

2016A&A...586A..64S - Astronomy and Astrophysics, volume 586A, 64-64 (2016/2-1)

XMM-Newton study of the Draco dwarf spheroidal galaxy.

SAEEDI S., SASAKI M. and DUCCI L.

Abstract (from CDS):

We present the results of the analysis of five XMM-Newton observations of the Draco dwarf spheroidal galaxy(dSph). The aim of the work is the study of the X-ray population in the field of the Draco dSph. We classified the sources on the basis of spectral analysis, hardness ratios, X-ray-to-optical flux ratio, X-ray variability, and cross-correlation with available catalogues in X-ray, optical, infrared, and radio wavelengths. We detected 70 X-ray sources in the field of the Draco dSph in the energy range of 0.2-12keV and classified 18 AGNs, 9 galaxies and galaxy candidates, 6 sources as foreground stars, 4 low-mass X-ray binary candidates, 1 symbiotic star, and 2 binary system candidates. We also identified 9 sources as hard X-ray sources in the field of the galaxy. We derived the X-ray luminosity function of X-ray sources in the Draco dSph in the 2-10keV and 0.5-2keV energy bands. Using the X-ray luminosity function in the energy range of 0.5-2keV, we estimate that ∼10 X-ray sources are objects in the Draco dSph. We have also estimated the dark matter halo mass that would be needed tokeep the low-mass X-ray binaries gravitationally bound to the galaxy.

Abstract Copyright: ∼

Journal keyword(s): galaxies: individual: Draco dwarf spheroidal galaxy - X-rays: galaxies - X-rays: binaries

Nomenclature: Table A.1: [SSD2016] NN N=70.

Simbad objects: 74

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Number of rows : 74
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 12665 1
2 NAME Sculptor Dwarf Galaxy G 01 00 09.4 -33 42 32   9.79 8.6 8.81   ~ 1363 4
3 [SSD2016] 1 X 17 18 46.52 +57 54 46.5           ~ 1 0
4 [SSD2016] 2 X 17 18 48.45 +57 50 13.3           ~ 1 0
5 [SSD2016] 3 X 17 18 50.179 +57 54 52.78           ~ 1 0
6 2MASS J17185697+5751023 LIN 17 18 56.9820024024 +57 51 02.268144540     18.816   17.672 ~ 3 0
7 SDSS J171900.86+575146.8 G 17 19 00.8471106363 +57 51 46.603820932           ~ 1 0
8 [VV2006] J171901.7+580028 QSO 17 19 01.7003916720 +58 00 28.750424724   18.7 19.008 19.3 18.400 ~ 35 0
9 [SSD2016] 7 QSO 17 19 04.1797187736 +58 03 29.122318548     20.614   20.037 ~ 3 0
10 SDSS J171904.64+574727.9 G 17 19 04.6327499134 +57 47 27.943325385           ~ 1 0
11 [SSD2016] 9 X 17 19 06.76 +57 55 48.0           ~ 1 0
12 [SSD2016] 10 G 17 19 10.4542487544 +57 49 47.811902988           ~ 1 0
13 [SSD2016] 11 X 17 19 10.921 +57 47 17.98           ~ 1 0
14 [SSD2016] 12 AGN 17 19 19.62 +57 59 42.2           ~ 1 0
15 LEDA 140771 G 17 19 19.9967514408 +57 54 00.976515012           ~ 18 0
16 [SSD2016] 14 XB? 17 19 21.848 +57 49 43.54           ~ 1 0
17 [SSD2016] 15 X 17 19 24.84 +57 44 52.0           ~ 1 0
18 [SSD2016] 17 * 17 19 25.6884733296 +58 01 00.069844260     19.038   17.882 ~ 4 0
19 SDSS J171926.00+575019.6 * 17 19 25.9858373952 +57 50 19.584868848           ~ 1 0
20 [SSD2016] 18 AG? 17 19 28.020 +57 43 13.14           ~ 1 0
21 [SSD2016] 19 X 17 19 29.56 +57 49 36.4           ~ 1 0
22 BASV 203 QSO 17 19 34.4250040464 +57 58 49.422491580   18.6 19.515 19.2 18.735 ~ 15 0
23 [SSD2016] 21 X 17 19 36.65 +57 49 00.2           ~ 1 0
24 [SSD2016] 22 X 17 19 36.992 +57 46 58.83           ~ 1 0
25 [SSD2016] 23 X 17 19 45.424 +57 52 57.09           ~ 1 0
26 [SSD2016] 24 XB? 17 19 54.038 +57 59 51.13           ~ 1 0
27 [SSD2016] 25 X 17 19 56.21 +58 05 27.1           ~ 1 0
28 [SSD2016] 26 X 17 19 57.05 +57 46 17.8           ~ 1 0
29 [ALS82] C1 Sy* 17 19 57.6571766280 +57 50 05.483985972   18.43 17.15   15.66 C,1e 63 0
30 [SSD2016] 28 X 17 20 02.29 +57 55 44.3           ~ 1 0
31 [SSD2016] 29 X 17 20 08.31 +57 58 20.4           ~ 1 0
32 [SSD2016] 30 X 17 20 10.520 +57 54 04.72           ~ 1 0
33 [BS61] 522 RG* 17 20 13.3866478248 +57 50 51.678992976   19.13 18.182   16.939 ~ 9 0
34 NAME Dra dSph G 17 20 14.335 +57 55 16.39   12.40 10.6     ~ 1333 1
35 [SSD2016] 32 X 17 20 15.255 +57 46 04.47           ~ 1 0
36 [BS61] 526 * 17 20 18.0233579664 +57 51 05.289183936     18.672   16.219 ~ 6 0
37 [SSD2016] 34 AG? 17 20 21.049 +57 44 01.20           ~ 1 0
38 SDSS J172021.64+574326.8 AG? 17 20 21.6523645464 +57 43 26.869853604           ~ 1 0
39 V* GM Dra SB* 17 20 21.8832019536 +57 58 27.057071532   9.30 8.77     F8 60 0
40 [SSD2016] 37 X 17 20 23.937 +57 50 09.82           ~ 1 0
41 TYC 3896-1335-1 * 17 20 25.6554357120 +57 53 04.406281800   11.49 11.18     ~ 3 0
42 [SSD2016] 38 X 17 20 25.77 +57 52 41.3           ~ 1 0
43 [SSD2016] 40 X 17 20 28.33 +57 56 23.3           ~ 1 0
44 [SSD2016] 41 G? 17 20 33.104 +58 07 14.68           ~ 1 0
45 2MASS J17203367+5808289 Sy1 17 20 33.6070464528 +58 08 29.704948368   18.39 17.89     ~ 16 0
46 [SSD2016] 42 G? 17 20 33.731 +58 06 12.33           ~ 1 0
47 3XMM J172037.1+574855 Sy1 17 20 37.1529033192 +57 48 56.188018152   19.49 18.93     ~ 9 0
48 TYC 3896-604-1 SB* 17 20 37.6823155584 +58 02 11.764176108   11.84 10.54     ~ 6 0
49 [SSD2016] 46 X 17 20 38.45 +57 45 45.4           ~ 1 0
50 [SSD2016] 47 X 17 20 39.66 +57 56 48.8           ~ 1 0
51 SDSS J172043.10+575443.0 AG? 17 20 43.0961137392 +57 54 42.987458808           ~ 2 0
52 [SSD2016] 49 X 17 20 47.27 +57 53 20.6           ~ 1 0
53 [SSD2016] 50 QSO 17 20 51.9281618496 +57 41 59.537966172     19.52   18.99 ~ 2 0
54 [SSD2016] 51 QSO 17 20 52.3038815424 +57 55 13.175889672     19.836   19.279 ~ 6 0
55 [SSD2016] 52 X 17 20 52.50 +58 04 51.1           ~ 1 0
56 [SSD2016] 53 G? 17 20 56.485 +57 47 39.40           ~ 1 0
57 [SSD2016] 54 AG? 17 21 00.538 +57 51 52.78           ~ 1 0
58 SDSS J172104.24+574106.0 AG? 17 21 04.2454811160 +57 41 06.050750316           ~ 1 0
59 SDSS J172104.76+575334.8 * 17 21 04.7620828680 +57 53 34.843722972           ~ 1 0
60 SDSS J172112.08+575002.3 X 17 21 12.0865577208 +57 50 01.825907028           ~ 1 0
61 [SSD2016] 58 X 17 21 13.06 +57 56 15.2           ~ 1 0
62 TYC 3896-652-1 * 17 21 16.9979328120 +58 01 13.180106172   11.64 11.22     ~ 1 0
63 [VV2006] J172122.8+575029 QSO 17 21 22.8274038312 +57 50 29.397366204   18.35 18.146   17.448 ~ 35 0
64 [SSD2016] 61 * 17 21 24.6215382792 +57 52 53.450572080     20.286   19.505 ~ 3 0
65 [SSD2016] 62 X 17 21 29.13 +57 47 08.9           ~ 1 0
66 [SSD2016] 63 X 17 21 36.11 +58 03 02.2           ~ 1 0
67 [SSD2016] 64 XB? 17 21 39.488 +58 01 44.90           ~ 1 0
68 [SSD2016] 65 XB? 17 21 40.60 +58 02 44.8           ~ 1 0
69 [SSD2016] 66 G? 17 21 41.214 +57 45 55.82           ~ 1 0
70 [SSD2016] 67 QSO 17 21 41.4440188368 +57 52 35.465943468     20.65   19.83 ~ 2 0
71 [VV2006] J172148.2+575805 QSO 17 21 48.2735395752 +57 58 05.331653148   20.46 20.70   19.75 ~ 26 0
72 RX J1721.9+5749 BY* 17 21 58.3080145056 +57 49 22.129673628   11.73 11.12 10.78   ~ 9 0
73 [VV2006] J172211.7+575652 QSO 17 22 11.6478971184 +57 56 51.952711272   20.74 20.74   19.77 ~ 24 0
74 NAME Local Group GrG ~ ~           ~ 8409 0

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